Willseal® Seismic HS

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Willseal® Seismic HS

Pre-Compressed Horizontal Expansion Seal

Willseal® Seismic HS

Pre-Compressed Horizontal Expansion Seal

A pre-compressed, self-expanding foam joint seal with a factory-applied, silicone sealant face. It is designed to provide a watertight, dust proof, noise reducing, thermally insulating, UV stable primary seal in horizontal applications.

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Benefits of Using Willseal Seismic HS in Your Next Project

Watertight Horizontal Seal

Open-cell foam impregnated with a hydrophobic, acrylic polymer and coated with a factory-applied silicone sealant creates a watertight seal

Flexible

Accommodates +/-50% movement at rapid rates

Easy Application

Utilizes non-invasive anchoring and leaves no unbonded laminations

Improved Aesthetics

Available factory-coated with silicone sealant in standard or custom colors to match the desired appearance

Willseal Seismic HS Is Best For

Primary construction joints
Retrofit joints
Seismic joints
Exterior panel systems

Joints for pre-cast concrete floor to wall joints

Product Properties

ASTM C518: Thermal Conductivity	0.05 W/m·°C
ASTM D3574: Ultimate Elongation	125% ± 20%
Foam Color	Black
Temperature Stability	-40 to 185 °F (-40 to 85 °C)